Sia + the Jonas Brothers Each Cover ‘Diamonds’ by Rihanna

The woman behind 'Diamonds' is coming to the forefront! Though Rihanna brought it to No. 1, Sia penned the hypnotic tune for the Bajan beauty, and now she's singing it herself. And she's not the only one!

Clad in a black gown and accompanied only by a piano, Sia took the stage and sang the hit she wrote with Benny Blanco. Stoic and still, Sia belted out the tune with feeling, but without movement, at the Norweigan-American Achievement Award ceremony on Nov. 28.

Who else besides the eccentric Aussie powerhouse covered the tune? The Jonas Brothers covered 'Diamonds' during a Nov. 27 show at the Pantages Theater in Hollywood. Their acoustic rendition was more guitar-driven than piano, but still melancholy and lighter-worthy.

Noticeably absent from the JoBros performance? Joe's Movember mustache. Not going to lie -- we don't think anyone is going to miss that thing.

Whose rendition of Rihanna's hit do you like best? Tell us in the comments!